JP3309033B2 - Readout system of image data recorded on disk storage medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for reading image data recorded on a disk storage medium such as a compact disk (CD) and a laser disk (LD).

[0002]

2. Description of the Related Art CDs and LDs capable of high-density and large-capacity storage
Various devices for displaying images using a disk storage medium ROM such as have been developed.

A video game apparatus is one of such apparatuses. In recent years, game software using a real moving image or an animation image as a background image has been provided. Further, generally, the image scene is switched to a different one in synchronization with the break of the game.

Here, C is used as a storage medium for image data.
When a disk storage medium ROM such as D or LD is used, it is necessary to physically move (seek) the read head to a predetermined address position. And CD-R
In the case of OM, at the maximum moving distance of the read head,
It takes about 500 ms for seeking. On the other hand, C
The data transfer speed of the D-ROM is approximately 300 KB / S.

When recording a moving image, the head information and the following moving image data are recorded integrally. In this case, the head information is proportional to the size of the moving image data (that is, the length of the reproduction time). In some cases, the size (area) of the obtained head information is required.

In such a case, if the moving image data is stored as it is, it is necessary to prepare a large buffer.
For this purpose, moving image data is divided into a plurality of pieces and stored in different areas.

[0007]

When the continuous image data is divided into a plurality of pieces and stored in different areas as described above, or when an image being reproduced is interrupted and branched to another image, The time to seek to another storage address location becomes a problem.

That is, as described above, the physical movement time of the read head is unavoidable for the seek, and it is necessary to stop the image display for the seek time.
In such a case, the display of continuous images is interrupted on the way, and the interest is reduced.

In the video game device, during the progress of the game, the player waits for the seek time when shifting to the next scene. In this case, the player loses interest in the game.

Accordingly, it is an object of the present invention to provide a system for reading out image data recorded on a disk storage medium which solves the above-mentioned problems in the conventional apparatus.

[0011] readout system different regions of the image data recorded on the disk recording medium according to the present invention from a disk storage medium for storing image data and means for reading the image data, reading by means for reading the image data <br /> and buffer storage means for storing image data sent, the server
The image data stored in Ffa storage means, sequentially Video
Display means for transferring the image data to a memory for display, wherein the means for reading out the image data is read out from one of the plurality of different areas and stored in the buffer storage means .
In the process of transferring the image data of the video memory, before
The read head seeks to the address of the disk storage medium of the second image data stored in an area different from the area of the first . Further, as a specific embodiment, the first image data that is read from the first region of the plurality of different regions, the second image data stored in said different region,
This is data of a continuous moving image. Alternatively, the first image data that is read from the first region of the plurality of different regions, the second image data stored in the different areas are each a different scene of the video game, the game breaks From the first image data in synchronization with the second
The display is switched to the image data. Therefore, it is possible to prevent continuous display of images from being interrupted.
Further, in the video game device, it is not necessary to wait for the seek time during the transition to the next scene during the progress of the game, and the problem that the interest is lost due to the stoppage of the image can be solved.

[0012] The present invention thus reads the image data of one section stored in the disk recording medium <br/>, buffer
Once completed the storage of the § storage means, to apparatus for reading images data, to perform a seek to the address of the image data stored in different areas. That is, the seek for reading said one of the moving image data, the video memory from the buffer memory means of the moving image data read in the other previously
This can be done in the process of transferring and displaying .

Therefore, the table of the image data of the previous segment is
As soon as the display is completed, the next segmented image data can be displayed. Thus, continuous image data can be displayed continuously without being stopped halfway.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar components will be described with the same reference numerals and symbols.

FIG. 1 shows a conceptual configuration of a video game apparatus to which the present invention is applied. In the figure, 1 is a CPU,
Controls the entire device. In particular, in connection with the present invention, an apparatus (for example, a CD-
Control means for controlling reading of image data from the ROM device 3).

Further, in a period for reading and displaying image data from the CD-ROM device 3, a read buffer period is provided for data for each section as described later.

Reference numeral 2 denotes a work RAM, which is a work buffer memory for temporarily storing data during the operation of the CPU 1. Reference numeral 3 denotes a CD-ROM playback device,
The ROM stores a program executed by the CPU and image data displayed on the monitor device 5.

Here, the work RAM 2 is not limited to a case where it is an independent memory element, and is also integrated with a CPU core.
Some also constitute PU1. The present invention is applicable in any case. In the context of the present invention, CP
Under the control of U1, the image data from the CD-ROM playback device 3 is temporarily stored.

Reference numeral 4 denotes a video RAM, which is read from the CD-ROM by the CD-ROM reproducing device 3 and
An image memory for temporarily storing image data for one screen under the control of the CPU 1.

Reference numeral 6 denotes a pad which is an input device operated by a player. The CPU 1 to the pad 6 are connected through a bus (BUS) to transmit and receive data.

Here, in the apparatus shown in FIG. 1, according to the feature of the present invention, when image data is read from the CD-ROM reproducing apparatus 3 and displayed on the monitor apparatus 5, a reading head to an area having a different reading address is used. The moving time for the access is determined by reading out one segment of image data and storing it in the work RAM 2 before the work RA
The transfer period from M2 to the video RAM 4 is used as a buffer period BM.

Therefore, during the buffer period BM, the address of the storage area for the next image data is designated, and the CD-RO
The M reproducing device 3 is caused to seek the read head to the specified address.

The operation of the embodiment of the connection between image data segments performed based on the reading control will be described below.

FIG. 2 is a diagram (part 1) for explaining the operation of the embodiment of the present invention. FIG. 2A shows an example of a case where continuous image data is divided into a plurality of sections, and this is read and reproduced. FIG. 2B is an example in which different image data is selectively connected.

In FIG. 2A, data 20, 21, and 22 are data of moving images A, B, and C, respectively. When the transfer of the moving image A20 to the reading video memory 4 is finished and the reading of the moving image B is continued, the moving image A20 is read according to the present invention, and the time after the storing in the work RAM 2 is completed. This is the buffer period BM.

That is, the moving image A20 is read out and the work R
At the time when the storage in the AM2 is completed, the movement of the read head is free. Therefore, in the buffer period BM, the read head seeks to the address where the image data to be read next is stored.

In the case of FIG. 2A, a moving image A is read,
After the storage in the work RAM 2, the seek for reading the moving image B21 is started. This seek operation is
This is performed during a buffer period BM, which is a period during which the moving image A20 is transferred from the work RAM 2 to the video RAM 4.

Similarly, the moving image B21 is read and stored, and a seek operation for reading the moving image C22 is performed during a period in which the moving image B21 is sequentially transferred to the video RAM 4.

FIG. 2B shows an example in which moving images of different types (for example, different scenes) are read after reading the moving image A20. In this example, the moving image A20
After the reading of is completed, the moving image B21 or the moving image C22 is selected. For example, after reading the moving image A20,
The moving image C22 is selected, and a seek operation for that is performed.

Also in such an example, the buffer period BM is a period in which the reading of the moving image data of each segment, the storing in the work RAM 2 and the transfer to the video RAM 4 are sequentially performed according to the present invention. Such a buffer period BM
In the above, the seek is performed at different address positions of the CD-ROM, so that the moving image data stored at the different address positions can be continuously read.

FIG. 3 is a diagram further describing the buffer period BM in the operation of the present invention. In the example shown in this figure, the reproduction of the moving image A20 is interrupted, and the display is branched to the moving image B or C.

In the figure, during reproduction of the moving image A20, S
Consider a case where switching of a moving image is instructed at the point of W. At this time, the moving image A
Transfer from work RAM 2 to video RAM 4 for 20
An indication has been made.

Further, the transfer of the moving image A20 stored in the work RAM 2 to the video RAM 4 is performed up to the image at the point P. Accordingly, the transfer period of the moving image A20 from the point P to the SW point to the video RAM 4 is the buffer period BM, and during this period, the moving image B21 or the moving image C
A seek to the 22 address locations is performed.

[0034] In FIG. 3, M is a seek time and a playback start to derive data amount read time to the address position of the moving picture B21 or a moving image C22. That is, during the buffer period BM, the read head is sought to the moving image B21 or C22 to be read next. On the other hand, during the buffer period BM, the video RA
Work of moving image A20 data read into M4
Transfer from RAM 2 to video RAM 4 and display
I have .

Next, at the time point SW when the moving image B or C to be reproduced is sought and read into the work RAM 2, the reproduction display of the moving image A is stopped and the reproduction of the moving image B or C is started.

FIG. 4 is a diagram for explaining the flow of data during continuous reproduction according to the present invention. FIG. 5 is an operation flow corresponding to FIG. In FIG. 4, 3 is CD-RO
M playback device, 2 is work RAM, 4 is video RAM, 5
Is a monitor device.

In FIG. 5, (I) is a reproduction display routine for reading a moving image (movie) A from a CD-ROM and displaying it on the monitor device 5. (II) shows a moving image (movie) B performed during the reproduction and display routine (I) of the moving image A
Is read from the CD-ROM and written into the video RAM 4.

Further, (III) shows that the moving image A is
This is a routine for transferring data from the M2 to the video RAM 4 and displaying it on the monitor device 5. (IV), during the period of (III),
This is a reproduction display routine for seeking the moving image B, reading it from the CD-ROM, and displaying it on the monitor device.

First, the reproduction and display routine of the moving image A is started. The moving image A is sought in the CD-ROM device 3, and the read data of the moving image A is transferred to the work RAM 2 (FIG. 5: step S1). Then, CD-RO
It is determined whether the reading of the moving image A from M has been completed (step S2). In the process of reading the moving image A, the moving image A from the CD-ROM is read into the work RAM 2 (step S3).

When one segment of the moving image A is read and the reading of the moving image A into the work RAM 2 is completed, the data of the moving image A is read from the work RAM 2 and transferred to the video RAM 4 (step S4) [FIG. ].

The moving image A transferred to the video RAM 4 is
It is reproduced and displayed on the monitor device 5 (step S5) [FIG.
(B)].

In step S2, when it is determined that the reading of the one-part moving image A from the CD-ROM into the work RAM 2 has been completed, a reading and reproducing display routine of the moving image B is started (step S6). FIG.
(C)]. In order to read the moving image B, first, a seek is performed at a predetermined address.

The data of the moving image B read from the CD-ROM is transferred to the RAM 2 (step S7). Then, the data of the moving image B is transferred from the RAM 2 to the video RAM 4.
(Step S8). Moving image A remaining in work RAM 2 during seek and reading to moving image B
Is transferred to the video RAM 4 to reproduce and display the moving image A. Then, it is determined whether or not the reproduction display of the moving image A has been completed (step S9).

When the reproduction display of the moving image A is not completed, the data of the moving image A is continuously transferred from the RAM 2 to the video R.
The image is transferred to the AM 4 (step S10), and the reproduction and display of the moving image A for one frame is continued (step S11).

When the reproduction and display of the moving image A is completed in step S9, the display operation routine of the moving image A is closed (step S12). When the display operation routine of the moving image A ends, the reproduction display of the moving image B is performed in the same manner as the reproduction display of the moving image A, and it is determined whether the reproduction display of the moving image B has been completed (step). S13).

When the reproduction display of the moving image B is completed, the display operation routine of the moving image B is closed (step S17).
During playback and display of the moving image B, the moving image B is read from the CD-ROM and transferred to the RAM 2 (step S14). Further, the data is transferred from the work RAM 2 to the video RAM 4 (step S15). Thereby, the reproduction display of one frame of the moving image B is performed (step S16).

[0047]

As described above according to the embodiment,
According to the present invention, display of a continuous image is not interrupted on the way. Further, in the video game device, it is not necessary to wait for the seek time during the transition to the next scene during the progress of the game, and the problem that the interest is lost due to the stoppage of the image can be solved.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of a video game device to which the present invention is applied.

FIG. 2 is an explanatory diagram (part 1) of the operation of the embodiment of the present invention.

FIG. 3 is an operation explanatory view (part 2) of the embodiment of the present invention;

FIG. 4 is a data flow at the time of continuous reproduction.

FIG. 5 is a processing flow at the time of continuous reproduction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Buffer RAM 3 CD-ROM playback device 4 Video RAM 5 Monitor device 6 Pat

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuhide Tanaka 1-2-1 Haneda, Ota-ku, Tokyo Inside Sega Enterprises Co., Ltd. (56) References JP-A-5-128810 (JP, A) JP JP-A-5-307597 (JP, A) JP-A-5-27745 (JP, A) JP-A-4-95430 (JP, A) JP-A-5-54521 (JP, A)

Claims (2)

(57) [Claims] And 1. A CPU that controls the entire readout means from the disk storage medium reading out the moving image data to store different types of moving image data to a plurality of different areas, the means for reading the video data Video tables and buffer storage means for storing the image de <br/> chromatography data, and video memory moving image data stored in said buffer storage means are sequentially transferred, the moving image data transferred to the video memory on the monitor
Display control means for performing display control for performing display , wherein the means for reading out the moving image data is read out from one of the plurality of different areas and stored in the buffer storage means. Moving image data to the display control means.
During playback on the monitor, the read head seeks to the address of the disk storage medium of the different type of second moving image data stored in an area different from the first area, and the seek is completed by the CPU. Instruction to switch the display of the first moving image data being reproduced to the display of the second moving image data after the reading of the second moving image data is started. A system for reading moving image data recorded on a disk storage medium. 2. The image processing apparatus according to claim 1, wherein the first image data read from one of the plurality of different areas includes
A second image data stored in an area different from the first area is a different scene of a video game, respectively.